Driving-gear for planers



(No Model.)

G. F. WELIVAR.

DRIVING GEAR FOR PLANERS.

No. 444,309. Patented Jan. 6, 1891.

WITNESSES A TTORNEYS UNTTED STATES PATENT @FFICE:

GEORGE FRANKLIN TVELIVAR, OF MILTON, PENNSYLVANIA.

DRIVING-GEAR FOR PLAN ERS.

SPECIFICATION forming part of Letters Patent No. 444,309, dated January6, 1891.

Application filed May 13, 1890. Serial No. 351,664. (No model.)

To all whom it may concern:

Be it known that I, GEORGE FRANKLIN )VELIVAR, of Milton, in the countyof Northumberland and State of Pennsylvania, have invented anew andImproved Driving-Gear for Planers, of which the following is a full,clear, and exact description.

The object of the invention is to provide a new and improveddriving-wheel for planingmachines which is simple and durable inconstruction and quickly reverses the motion of the bed without shiftingthe belts.

The invention consists of a double clutch held on the main driving-shaftand controlled from the bed, and two sets of gear-wheels connected withthe bed and adapted to be alternately connected with the said doubleclutch.

The invention also consists of certain parts and details andcombinations of the same, as will be hereinafter fully described, andthen pointed out in the claims.

Referenceis to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a side elevation of the improvement as applied, part of theplaner-frame being broken out; and Fig. 2 is an inverted plan view ofthe same partly in section. a detail view, hereinafter described.

The planer A, on which the improvement is applied, is provided with theusual bedframe B, on which is mounted to turn in suitable bearings thetransversely extending main driving-shaft O, carrying the usualconepulley D, connected by a belt with suitable machinery for impartinga rotary motion to the said main driving-shaft C. On the latter ismounted to turn loosely a gear-wheel E. in mesh with a gear-wheel F,secured on a shaft G, extending transversely and mounted to turn on theunder side of the bed-frame B. A pinion II is secured on the shaft G andmeshes into a large gear-wheel I, secured on a shaft J, also mounted toturn in suitable bearings on the under side of the bed-frame B, as isplainly shown in the drawings. The gear-wheel I is in mesh with a rackK, fastened to the under side of the bed L, mounted to travel insuitable bearings on the top of the bed-frame B. The work to be operatedFig. is'

on is secured in the usual manner on this bed L, which is also providedwith the usual adj ustable dogs L and L extending from one side thereof.On the main driving-shaft Ois also mounted to rotate loosely agear-wheel N, in mesh with an intermediate gear-wheel O, meshing into agear-wheel I, secured on the shaft G. On the inner face of thegearwheels E and N are secured conical flanges Q and Q, respectivelyadapted to be alternatelyengaged by the conical ends R and B,respectively, formed on a clutch S, mounted to turn and to slide on themain driving-shaft O. The clutch S is provided. with the usual annulargroove S, engaged by the shifting fork T, fulcrumed at T to thebed-frame B, and provided with an outwardly-extending arm T pivotallyconnected bya link U with a vertically-arranged lever V, fulcrumed onthat side of the bed-frame B onto which extend the dogs L and L of thebed L. Friction-collars TV and \V' are held on the gearwheels E and N,respectively, and are connected with the chains V and V passing overfriction-pulleys held on the bedframe B. The inner ends of the chainsand VV connect with the shifting-fork T, as is plainly shown in Fig. 2.The friction-collars are split and held on the hubs e and c ofgear-wheels E and N, respectively. One side of each of the collars isconnected with the chains and respectively, and one of the flanges onthe collars is adapted to strike against a fixed stop (see Fig. 3) onthe frame to prevent further movement of the collar. The latter can beheld with more orless friction in contact with the hub of the respectivegear-wheel by adjusting the set-screw W on flanges.

The operation is as follows: \Vhen the clutch S is in the position shownin Fig. 2, then the cone-shaped end B of the clutch S is in frictionalcontact with the annular flange Q, so that when the shaft O is rotated arotary motion is transmitted by the clutch S to the gear-wheel N, which,in meshing into the intermediate gear-wheel O, rotates thelatter, sothat a rotary motion is transmitted from the intermediate gear-wheel Oto the gear-wheel P and to the shaft G. The latter, by the pinion Hmeshing into the gear-wheel I, rotates the latmitted by the clutch S tothe gear-wheel,

which, in meshing directly into the gearwheel F, secured on the shaft G,rotates the latter in an opposite direction, so that the motion of thebed L is reversed. The motion of the bed is again shifted as soon as itan rives at the end of the next stroke by the respective (log L or Lshifting the lever V. Thus it will be seen that the motion of the bedLis reversed without shifting the belts, as is now the common practice.It will further be seen that the device is simple and durable inconstruction and very effective and positive in operation.

The operation and objects of friction-collars V \V and the chains are asfollows, viz: After the clutch has been thrown into engagement with theconical flange Q, as. Fig. 2, the friction collar or strap V will turnwith the gear-wheel N and exert sufficicnt strain on the chain 'to causeit to pull the lever T and hold the end R of the clutch S in the flangeQ' against accidental displacement by jarring of the machinery orotherwise. The strap or collar W during this time is slipping on the hubwith one of its flanges W engaging one of the stops W (of which thereare two, one at each side of the frame.) \Vhen the lever T is thrown toconnect its end R with the flange Q and reverse the movement of the barL, the strap \V will cease slipping and turn with the gear E with atendency to wind the chain W and thus cause it to pull on the lever T,and said lever will simultaneously pull on the chain W and cause it toslip the strap or collar W on the hub e of gear k, and the flange W onthe collar \V will strike the stop at that side of the machine whichwill cause the collar to slip until the machine is again reversed. Themovement of the two chains is very slight, and while they do notactually wind omtlie collars or straps \V \V' the tendency is that way.The chains form flexible connections between the collars or straps andthe shift- 1ng-1ever.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent-- 1. The combination, with the frame and thesliding bed thereon provided with a longitudinally-extendingrack,ofatransverse main drive-shaft to continuously rotate in one direction,and provided with two loose gearwheels and an intermediate slidingclutch to alternately connect said gear -whccls and shaft, a shaftparallel with the drive-shaft geared to the said rack, and having agearwhcelatonecnd meshingwith one of said loose gears and anothergear-wheel in line with the other loose gear-wheel, and an intermediategear-wheel connecting said two last-named gear-wheels, whereby byshifting the clutch the bed may be moved in either direction,substantially as set forth.

2. The combination, with the frame and the sliding bed thereon providedwith a longitudinal rack and knockers orlugs, of the transverse mainshaft to continuously rotate in one direction, and provided with twoloose gearwheels, an intermediate clutch on said shaft to alternatelyconnect said gear-wheels therewith, a lever for operating said clutch, avertically-roeking lever in the path of said knockers and connected tosaid clutch-lever, a shaft parallel with the drive-shaft geared to saidrack, and having a gear-wheel meshing into one of said loose gear-wheelsand a second gear-wheel in alignment with the other loose gear-wheel,and an intermediate gear-wheel connecting said two last-namedgear-wheels, substantially as set forth.

3. In a driving-gear for plancrs, the com bination, with adriving-shaft, of a double clutch mounted to turn with and to slide onthe said shaft, a shifting fork connected with the said clutch andadapted to be operated on from the dogs of the bed, two sets of wheelsconnected with the bed and adapted to be alternately connected with thesaid double clutch, friction-collars held on the two sets ofgear-wheels, and chains connecting the said friction-collars wit-h thesaid shifting fork, substantially as shown and described.

4. The combination, with adrive-shaft having loose gear-wheels providedwith hubs and an intermediate sliding, clutch on the shaft toalternately connect said gears with the shaft, and a lever for shiftingthe said clutch, of friction collars or straps on said hubs, flexibleconnections between said lever and straps or collars, and guide-pulleysover which said connections pass, substantially as and for the purposeset forth.

5. The combination, with the frame, the drive-shaft having loosegear-wheels provided with hubs, an intermediate sliding clutch toalternately connect said gears with the shaft, and a lever for shiftingthe clutch, of friction-collars on the said hubs, flexible connectionsbetween the collars and lever, guidepulleys for said connections, andstops on the frame to engage said collars,substantially as and for thepurpose set forth.

GEORGE lrRANKLlN WELH'AR.

Witnesses GEO. \V. HAAG, J. H. FOLLMER.

